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https://www.readbyqxmd.com/read/28340187/biofilm-adherence-and-hydrophobicity-as-virulence-factors-in-malassezia-furfur
#1
Letizia Angiolella, Claudia Leone, Florencia Rojas, Javier Mussin, María de Los Angeles Sosa, Gustavo Giusiano
Malassezia species are natural inhabitants of the healthy skin. However, under certain conditions, they may cause or exacerbate several skin diseases. The ability of this fungus to colonize or infect is determined by complex interactions between the fungal cell and its virulence factors. This study aims to evaluate "in vitro" the hydrophobicity levels, the adherence on a plastic surface and the biofilm formation of 16 clinical isolates of Malassezia furfur. Cellular surface hydrophobicity (CSH) levels were determined by two-phase system...
March 9, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28339618/telomere-length-oxidative-stress-inflammation-and-bdnf-levels-in-siblings-of-patients-with-bipolar-disorder-implications-for-accelerated-cellular-aging
#2
Mirela Paiva Vasconcelos-Moreno, Gabriel Rodrigo Fries, Carolina Gubert, Bárbara Tietböhl Martins Quadros Dos Santos, Adam Fijtman, Juliana Sartori, Pamela Ferrari, Lucas Kich Grun, Mariana Migliorini Parisi, Fátima Theresinha Costa Rodrigues Guma, Florencia Maria Barbé-Tuana, Flávio Kapczinski, Adriane Ribeiro Rosa, Lakshmi N Yatham, Marcia Kauer-Sant'Anna
Background: Growing evidence supports the existence of neurobiological trait abnormalities in individuals at genetic risk for bipolar disorder. The aim of this study was to examine potential differences in brain-derived neurotrophic factor, cytokines, oxidative stress, and telomere length markers between patients with bipolar disorder, their siblings, and healthy controls. Methods: Thirty-six patients with bipolar disorder type I, 39 siblings, and 44 healthy controls were assessed...
January 30, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28324847/species-identification-in-forensic-samples-using-the-spindel-approach-a-ghep-isfg-inter-laboratory-collaborative-exercise
#3
Cíntia Alves, Rui Pereira, Lourdes Prieto, Mercedes Aler, Cesar R L Amaral, Cristina Arévalo, Gabriela Berardi, Florencia Di Rocco, Mariela Caputo, Cristian Hernandez Carmona, Laura Catelli, Heloísa Afonso Costa, Pavla Coufalova, Sandra Furfuro, Óscar García, Anibal Gaviria, Ana Goios, Juan José Builes Gómez, Alexis Hernández, Eva Del Carmen Betancor Hernández, Luís Miranda, David Parra, Susana Pedrosa, Maria João Anjos Porto, Maria de Lurdes Rebelo, Matteo Spirito, María Del Carmen Villalobos Torres, António Amorim, Filipe Pereira
DNA is a powerful tool available for forensic investigations requiring identification of species. However, it is necessary to develop and validate methods able to produce results in degraded and or low quality DNA samples with the high standards obligatory in forensic research. Here, we describe a voluntary collaborative exercise to test the recently developed Species Identification by Insertions/Deletions (SPInDel) method. The SPInDel kit allows the identification of species by the generation of numeric profiles combining the lengths of six mitochondrial ribosomal RNA (rRNA) gene regions amplified in a single reaction followed by capillary electrophoresis...
March 7, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28322177/prevalence-estimate-of-cerebral-palsy-in-northern-alberta-births-2008-2010
#4
Charlene M T Robertson, M Florencia Ricci, Kathleen O'Grady, Maryam Oskoui, Helly Goez, Jerome Y Yager, John C Andersen
OBJECTIVES: The objectives of this study were to determine prevalence estimates of cerebral palsy (CP) among 5-year-old children in northern Alberta; to provide congenital, gestational age- and birth weight-specific, and postneonatal CP rates; and to describe motor subtypes and function. METHODS: This population-based prevalence estimate study, part of the Canadian Cerebral Palsy Registry, reports confirmed CP diagnoses at age 5 years made by pediatric rehabilitation and child neurology specialists...
March 21, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28320881/lpto-pg0027-is-required-for-lipid-a-1-phosphatase-activity-in-porphyromonas-gingivalis-w50
#5
Minnie Rangarajan, Joseph Aduse-Opoku, Ahmed Hashim, Graham McPhail, Zofia Luklinska, M Florencia Haurat, Mario F Feldman, Michael A Curtis
Porphyromonas gingivalis produces outer-membrane vesicles (OMVs) rich in virulence factors including cysteine-proteases and A-LPS, one of the two lipopolysaccharides (LPS) produced by this organism. Previous studies had suggested that A-LPS together with PG0027, an outer-membrane (OM) protein, may be involved in OMV-formation. Their roles in this process were examined using parent W50 and mutant ΔPG0027 strains. Inactivation of PG0027 caused a reduction in yield of OMVs. Lipid A from cells and OMVs of P. gingivalis W50 and ΔPG0027 strains were analysed by matrix-assisted laser-desorption-ionisation-time of flight mass spectrometry (MALDI-TOF- MS)...
March 20, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28320728/mutations-at-arg220-and-thr237-in-per-2-%C3%AE-lactamase-impact-on-conformation-activity-and-susceptibility-to-inhibitors
#6
Melina Ruggiero, Lucrecia Curto, Florencia Brunetti, Eric Sauvage, Moreno Galleni, Pablo Power, Gabriel Gutkind
PER-2 accounts for up to 10% of oxyimino-cephalosporin resistance in Klebsiella pneumoniae and Escherichia coli in Argentina, and hydrolyzes both cefotaxime and ceftazidime with high catalytic efficiencies (kcat/Km). Through crystallographic analyses, we recently proposed the existence of a hydrogen-bond network connecting Ser70-Gln69-oxyanion water-Thr237-Arg220 that might be important for the activity and inhibition of the enzyme. Mutations at Arg244 in most class A β-lactamases (as TEM and SHV) reduce susceptibility to mechanism-based inactivators, and Arg220 in PER β-lactamases is equivalent to Arg244...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28318186/cross-cultural-adaptation-of-the-transition-readiness-assessment-questionnaire-to-argentinian-spanish
#7
Carmen L De Cunto, Alfredo Eymann, María de Los Ángeles Britos, Florencia González, Mariana Roizen, María de Las Mercedes Rodríguez Celin, Enrique Soriano Guppy
In Argentina, there was not an adapted and validated instrument to evaluate readiness for the transition to adult health care. The purpose of this study was to describe the process of cross-cultural adaptation of the Transition Readiness Assessment Questionnaire 5.0 to Argentinian Spanish. The authors of the instrument were contacted to this effect. Stage 1: two translators performed the translation to Spanish. Stage 2: based on these two versions, version 1 was agreed upon. Stage 3: two back-translations were performed...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28316756/photon-reabsorption-in-mixed-cspbcl3-cspbi3-perovskite-nanocrystal-films-for-light-emitting-diodes
#8
Nathaniel J L K Davis, Francisco J de la Peña, Maxim Tabachnyk, Johannes M Richter, Robin D Lamboll, Edward P Booker, Florencia Wisnivesky Rocca Rivarola, James T Griffiths, Caterina Ducati, S Matthew Menke, Felix Deschler, Neil C Greenham
Cesium lead halide nanocrystals, CsPbX3 (X = Cl, Br, I), exhibit photoluminescence quantum efficiencies approaching 100% without the core-shell structures usually used in conventional semiconductor nanocrystals. These high photoluminescence efficiencies make these crystals ideal candidates for light-emitting diodes (LEDs). However, because of the large surface area to volume ratio, halogen exchange between perovskite nanocrystals of different compositions occurs rapidly, which is one of the limiting factors for white-light applications requiring a mixture of different crystal compositions to achieve a broad emission spectrum...
February 23, 2017: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
https://www.readbyqxmd.com/read/28290300/identification-of-drivers-of-dis-liking-based-on-dynamic-sensory-profiles-comparison-of-temporal-dominance-of-sensations-and-temporal-check-all-that-apply
#9
Gastón Ares, Florencia Alcaire, Lucía Antúnez, Leticia Vidal, Ana Giménez, John C Castura
Temporal Dominance of Sensations (TDS) and Temporal Check-all-that-apply (TCATA) are two multi-attribute methods for dynamic sensory characterization. Previous research has shown that both methodologies provide complementary information. However, it remains an open question which of the two approaches better explains consumers' hedonic perception of products. In this context, the aim of the present work was to compare TDS and TCATA in terms of their ability to identify the influence of the dynamic sensory profile of food products on consumer overall liking scores...
February 2017: Food Research International
https://www.readbyqxmd.com/read/28290135/spinal-cord-injury-impairs-neurogenesis-and-induces-glial-reactivity-in-the-hippocampus
#10
Ignacio Jure, Luciana Pietranera, Alejandro F De Nicola, Florencia Labombarda
The incorporation of newborn neurons with increased synaptic remodeling and activity-dependent plasticity in the dentate gyrus enhances hippocampal-dependent learning performances. Astrocytes and microglial cells are components of the neurogenic niche and regulate neurogenesis under normal and neurophatological conditions leading to functional consequences for learning and memory. Although cognitive impairments were reported in patients after spinal cord injury (SCI), only few studies have considered remote changes in brain structures which are not related with sensory and motor cortex...
March 13, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28283268/perioperative-management-of-vitamin-k-antagonists-in-patients-with-low-thromboembolic-risk-undergoing-elective-surgery-a-prospective-experience
#11
Ana Florencia Becerra, María Teresita Cornavaca, José Ignacio Revigliono, Alejandro Contreras, Ricardo Albertini, Aldo Hugo Tabares
BACKGROUND AND OBJECTIVES: To quantify thromboembolic and bleeding events in patients with low thromboembolic risk, who were chronically receiving vitamin K antagonists and undergoing elective surgery. MATERIAL AND METHODS: A descriptive, prospective, single-center study was conducted between December 2010 and July 2014. Patients aged over 18 years old, chronically anticoagulated with vitamin K antagonists and admitted for elective surgery were included in the study...
March 7, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28282081/-impact-of-facial-emotional-recognition-alterations-in-dementia-of-the-alzheimer-type
#12
Wanda Rubinstein, Florencia Cossini, Daniel Politis
Face recognition of basic emotions is independent of other deficits in dementia of the Alzheimer type. Among these deficits, there is disagreement about what emotions are more difficult to recognize. Our aim was to study the presence of alterations in the process of facial recognition of basic emotions, and to investigate if there were differences in the recognition of each type of emotion in Alzheimer's disease. With three tests of recognition of basic facial emotions we evaluated 29 patients who had been diagnosed with dementia of the Alzheimer type and 18 control subjects...
July 2016: Vertex: Revista Argentina de Psiquiatriá
https://www.readbyqxmd.com/read/28277178/estimate-of-the-theoretical-maximum-daily-intake-of-sunset-yellow-fcf-by-the-brazilian-population
#13
Luana Carolina Alves Feitosa, Patricia Da Silva Rodrigues, Adson Storck Da Silva, Alessandro De Oliveira Rios, Florencia Cladera-Olivera
This study estimated the theoretical maximum daily intake (TMDI) of Sunset Yellow (SY) synthetic food dye by the Brazilian population through food consumption data from the Household Budget Survey (HBS) of the Brazilian Institute of Geography and Statistics (IBGE, 2008/09). The study covered the population in urban and rural areas in the five regions of the country, and from different age groups, in order to verify if it were possible to exceed the acceptable daily intake (ADI) of SY, which is 4.0 mg kg(-1) body weight...
February 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28270915/options-in-human-papillomavirus-hpv-detection-for-cervical-cancer-screening-comparison-between-full-genotyping-and-a-rapid-qualitative-hpv-dna-assay-in-ghana
#14
Dorcas Obiri-Yeboah, Yaw Adu-Sarkodie, Florencia Djigma, Kafui Akakpo, Ebenezer Aniakwa-Bonsu, Daniel Amoako-Sakyi, Simpore Jacques, Philippe Mayaud
BACKGROUND: Modern cervical cancer screening increasingly relies on the use of molecular techniques detecting high-risk oncogenic human papillomavirus (hr-HPV). A major challenge for developing countries like Ghana has been the unavailability and costs of HPV DNA-based testing. This study compares the performance of careHPV, a semi-rapid and affordable qualitative detection assay for 14 hr-HPV genotypes, with HPV genotyping, for the detection of cytological cervical squamous intraepithelial lesions (SIL)...
2017: Gynecologic Oncology Research and Practice
https://www.readbyqxmd.com/read/28263041/initial-experience-with-intra-fraction-motion-monitoring-using-calypso-guided-volumetric-modulated-arc-therapy-for-definitive-prostate-cancer-treatment
#15
Linda J Bell, Thomas Eade, Andrew Kneebone, George Hruby, Florencia Alfieri, Regina Bromley, Kylie Grimberg, Mardi Barnes, Jeremy T Booth
INTRODUCTION: Accurate delivery of radiation while reducing dose to organs at risk is essential in prostate treatment. The Calypso motion management system detects and corrects both inter- and intra-fraction motion which offers potential benefits over standard alignment to fiducial markers. The aims of this study were to implement Calypso with Dynamic Edge™ gating and to assess both the motion seen, and interventions required. METHODS: An implementation group was formed which assessed changes needed to standard workflows...
March 2017: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/28255652/attenuation-of-liver-cancer-development-by-oral-glycerol-supplementation-in-the-rat
#16
Alejo M Capiglioni, Florencia Lorenzetti, Ariel D Quiroga, Juan P Parody, María T Ronco, Gerardo B Pisani, María C Carrillo, María P Ceballos, María de Luján Alvarez
PURPOSE: Glycerol usage is increasing in food industry for human and animal nutrition. This study analyzed the impact of glycerol metabolism when orally supplemented during the early stage of rat liver carcinogenesis. METHODS: Wistar rats were subjected to a 2-phase model of hepatocarcinogenesis (initiated-promoted, IP group). IP animals also received glycerol by gavage (200 mg/kg body weight, IPGly group). RESULTS: Glycerol treatment reduced the volume of preneoplastic lesions by decreasing the proliferative status of liver foci, increasing the expression of p53 and p21 proteins and reducing the expression of cyclin D1 and cyclin-dependent kinase 1...
March 2, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28254489/sex-chromosome-complement-involvement-in-angiotensin-receptor-sexual-dimorphism
#17
Florencia M Dadam, Carla D Cisternas, Ana F Macchione, Andrea Godino, José Antunes-Rodrigues, María J Cambiasso, Laura M Vivas, Ximena E Caeiro
This study aimed to define whether sex chromosome complement (SCC) may differentially modulate sex differences in relative gene expression of basal Agtr1a, Agtr2, and Mas1 receptors at fore/hindbrain nuclei and at medulla/cortical kidney. Samples were collected from gonadectomized male (XX and XY) and female (XX and XY) mice of the "four core genotypes" model. At brain level, a SCC effect at the area postrema was demonstrated. An increase in mRNA level of Agtr1a and Agtr1a/Agtr2 ratio in XY-SCC mice was associated with a decrease in Mas1 compared to XX-SCC mice...
February 27, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28246335/dynamic-regulation-of-extracellular-atp-in-escherichia-coli
#18
Cora Lilia Alvarez, Gerardo Corradi, Natalia Lauri, Irene Marginedas-Freixa, María Florencia Leal Denis, Nicolás Enrique, Sabina María Mate, Verónica Milesi, Mariano Anibal Ostuni, Vanesa Herlax, Pablo J Schwarzbaum
We studied the kinetics of extracellular ATP (ATPe) in Escherichia coli , and their outer membrane vesicles (OMVs) stimulated with amphipatic peptides melittin (MEL) and mastoparan 7 (MST7). Real time luminometry was used to measure ATPe kinetics, ATP release and ATPase activity. The latter was also determined by following [(32)P]Pi released from [γ-(32)P]ATP. E. coli was studied alone, coincubated with Caco-2 cells or in rat jejunum segments. In E. coli , addition of [γ-(32)P]ATP led to uptake and subsequent hydrolysis of ATPe...
February 28, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28243615/dataset-on-absorption-spectra-and-bulb-concentration-of-phenolic-compounds-that-may-interfere-with-onion-pyruvate-determinations
#19
Vanesa H Beretta, Florencia Bannoud, Marina Insani, Claudio R Galmarini, Pablo F Cavagnaro
We present data on absorption spectra (400-540 nm) and concentration of phenolic compounds quercetin, myricetin, kaempferol, rutin, catechin, epicatechin gallate (ECG) and epigallocatechin gallate (EGCG), in yellow, red and white onions. These data are related to the article entitled "Variability in spectrophotometric pyruvate analyses for predicting onion pungency and nutraceutical value" (Beretta et al., 2017) [1]. Given the relevance of pyruvate determinations for estimating onion pungency and functional value, it is important to identify compounds that can interfere with pyruvate determinations when using two previously published analytical procedures, namely Schwimmer and Weston (1961) (SW) [2] and Anthon and Barret (2002) (AB) [3], which are based on spectrophotometry and light-absorbance at 420 nm and 515 nm, respectively...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28242659/molecular-confirmation-of-the-relationship-between-candida-guilliermondii-fks1p-naturally-occurring-amino-acid-substitutions-and-its-intrinsic-reduced-echinocandin-susceptibility
#20
Catiana Dudiuk, Daiana Macedo, Florencia Leonardelli, Laura Theill, Matias S Cabeza, Soledad Gamarra, Guillermo Garcia-Effron
C. guilliermondii shows intrinsic reduced echinocandin susceptibility. It harbors two polymorphisms (L633M and T634A) at the Fks1p hot-spot 1 region. Our objective was to confirm that C. guilliermondii's reduced echinocandin susceptibility is due to those naturally occurring substitutions. We constructed a Saccharomyces cerevisiae mutant where a region of its FKS1 gene (including hot-spot 1) was replaced with that from C. guilliermondii The chimeric mutants showed 32-fold echinocandin MIC values increase confirming the hypothesis...
February 27, 2017: Antimicrobial Agents and Chemotherapy
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